(19)

(11)

EP 1 792 468 A1

(12)

(43) Date of publication: 06.06.2007 Bulletin 2007/23 (21) Application number: 06764483.1 (22) Date of filing: 07.06.2006

(51) International Patent Classification (IPC):  H04L 29/06(2006.01) (86) International application number: PCT/FI2006/050238 (87) International publication number: WO 2006/131600 (14.12.2006 Gazette 2006/50)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR Designated Extension States: AL BA HR MK YU (30) Priority: 07.06.2005 FI 20055295 (71) Applicant: TeliaSonera AB S-106 63 Stockholm (SE)	(72) Inventor: MÄKELÄ, Antti FI-33720 Tampere (FI) (74) Representative: Pursiainen, Timo Pekka et al Tampereen Patenttitoimisto Oy Hermiankatu 12 B FIN-33720 Tampere FIN-33720 Tampere (FI)